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Map of U.S. time zones with new CST and EST areas displayed. Some U.S. time zones, such as the Samoa Time Zone, are not on this map. This is a list of the time offsets by U.S. states, federal district, and territories. For more about the time zones of the U.S. see time in the United States. Most states are entirely contained within one time zone.
Arizona highway sign with notice for travelers about local time standard. Time in Arizona, as in all U.S. states, is regulated by the United States Department of Transportation [1] as well as by state and tribal law. All of Arizona is in the Mountain Time Zone. [2]
If present, a dagger (†) indicates the usage of a nautical time zone letter outside of the standard geographic definition of that time zone. Some zones that are north/south of each other in the mid-Pacific differ by 24 hours in time – they have the same time of day but dates that are one day apart. The two extreme time zones on Earth (both ...
Since then, local times change at 2:00 a.m. EST to 3:00 a.m. EDT on the second Sunday in March, and return from 2:00 a.m. EDT to 1:00 a.m. EST on the first Sunday in November. [4] In Canada, daylight saving time begins and ends on the same days and at the same times as it does in the United States. [5] [6]
One reason to draw time zone boundaries far to the west of their ideal meridians is to allow the more efficient use of afternoon sunlight. [36] Some of these locations also use daylight saving time (DST), further increasing the difference to local solar time. As a result, in summer, solar noon in the Spanish city of Vigo occurs at 14:41 clock time.
When does Daylight Savings 2024's time change fall back? Unless efforts to make daylight saving time permanent succeed, daylight saving time will end for the year at 2 a.m. on Sunday, Nov. 3.
Before the adoption of four standard time zones for the continental United States, many towns and cities set their clocks to noon when the sun passed their local meridian, pre-corrected for the equation of time on the date of observation, to form local mean solar time. Noon occurred at different times but time differences between distant ...
Countdown clock to the end of daylight saving time 2023 ... Daylight saving time for 2024 will be at 2 a.m. EST Sunday, March 10, when we "spring forward" or lose an hour. ... Support local ...